METRObility Optical Systems twister 2111, 2111-15-B, 2111-12-01, 2111-13-B User Manual
Installation & User Guide
Models: 2111-12-01 / 2111-13-B / 2111-15-B
“twister”
®
2111
10 Mbps Media Converter
LINK
PWR
10BASE-2 10BASE-T
™
“twister”
2111
ACT
ON
OFF
TERM
COL
TX RX
LK
AT
PWR
10BASE-FL 10BASE-T
™
“twister”
2111
TX RX
LK
LK
AT
AT
PWR
10BASE-FL 10BASE-T
™
“twister”
2111
II
x
LK
AT
II
x
This publication is protected by the copyright laws of the United States and other countries, with all rights
reserved. No part of this publication may be reproduced, stored in a retrieval system, translated, transcribed,
or transmitted, in any form, or by any means manual, electric, electronic, electromagnetic, mechanical,
chemical, optical or otherwise, without prior explicit written permission of Metrobility Optical Systems, Inc.
© 1999-2005 Metrobility Optical Systems, Inc. All rights reserved. Printed in USA.
Metrobility® 10 Mbps “twister”® Standalone Media Converters
2111-12-01 ____RJ-45 to BNC
211 1-13-B _____ RJ-45 to FL multimode SC
211 1-15-B _____ RJ-45 to FL multimode ST
Table of Contents
“twister” 2111 Media Converter Installation & User Guide
Introduction .............................................................................................................. 4
Overview ................................................................................................................... 4
Installation Guide ..................................................................................................... 5
STEP 1: Unpack the “twister” and Accessories ........................................ 5
STEP 2: Attach the Rubber Feet................................................................ 5
STEP 3: Choose an Appropriate Location ................................................ 5
STEP 4: Set the Switches .......................................................................... 6
Termination Switch ............................................................................. 6
Transparency Switch ........................................................................... 7
MDI-II to MDI-X Switch .................................................................... 8
STEP 5: Connect to the Network .............................................................. 9
Twisted-Pair Interface ......................................................................... 9
Fiber Optic Interface ......................................................................... 10
BNC Interface ................................................................................... 11
STEP 6: Apply Power.............................................................................. 13
User Guide .............................................................................................................. 15
System LEDs........................................................................................... 15
Transparency Mode................................................................................. 16
Topology Solutions ................................................................................. 18
Technical Specifications.......................................................................... 19
Product Safety, EMC and Compliance Statements ................................. 20
Warranty and Servicing ........................................................................... 21
Metrobility Optical Systems, Metrobility, Lancast, and “twister” are registered trademarks of Metrobility Optical
Systems, Inc.; the Metrobility Optical Systems logo is a trademark of Metrobility Optical Systems, Inc. All
others are trademarks of their respective owners.
The information contained in this document is assumed to be correct and current. The manufacturer is not
responsible for errors or omissions and reserves the right to change specifications at any time without notice.
4
Overview
Introduction
Metrobility “twister” media converters represent the hottest technology
available for extending Ethernet networks. Since Metrobility first developed
“twister” media conversion, it has become a standard for providing cost-effective
means of integrating mixed media environments. As LANs grow and evolve, this
technology provides the ideal solution for building effective migration strategies.
Designed to meet IEEE 802.3 compliance, these media converters are compatible
with Ethernet devices from other leading network technology providers. This
increases the flexibility of your network by ensuring reliable data transmission in
multi-vendor as well as mixed media environments.
The information in this guide will help you to install and start using your “twister”
2111 media converter.
The Metrobility “twister” 2111 10 Mbps media converter provides seamless
integration of 10BASE-T Category 3, 4, and 5 twisted-pair segments with either
multimode 10BASE-FL fiber optic segments or thinnet coax in Ethernet environments.
To optimize your Ethernet network, the 2111 media converter provides seamless
operation in half- or full-duplex modes. Full signal restoration—with a low bit
delay—ensures accurate data transmission to and from LANs within an organization.
All signal activity is completely converted ensuring accurate communication and
collision detection in connected segments and allowing maximum media length to be
achieved on either side of the device.
The “twister” 2111 provides the following key features:
• MDI-II/MDI-X switch on the twisted-pair port to eliminate the need for
crossover cables.
• Transparency Mode that allows auto-negotiation by end points through the
media converter. (2111-13-B and 2111-15-B only.)
• Auto polarity on the twisted-pair port.
• Half- and full-duplex support.
• Low bit delay to ensure accurate data flow across the network.
• Transparency to data frame sizes.
• Full compliance with applicable sections of IEEE 802.3.
“twister” 2111 Media Converter 5
2
Installation Guide
Follow the simple steps outlined in this section of the guide to install and start
using your Metrobility “twister” media converter.
Unpack the “twister” and Accessories
Check that the following components have been included with your order:
• “twister” 2111 media converter
• Power supply
• Power cord
• Four (4) rubber feet
Your order has been provided with the safest possible packaging, but
shipping damage does occasionally occur. Inspect your order carefully. If
you discover any shipping damage, notify the carrier and follow their
instructions for damage and claims. Save the original shipping carton if
return or storage of the unit is necessary.
Attach the Rubber Feet
The “twister” 2111 is shipped with four rubber feet. To install the feet, turn
the “twister” upside-down. Peel the self-adhesive rubber feet from the paper
strip and attach one foot to each corner on the bottom of the “twister” 2111.
Installing the feet provides an air gap which helps to cool the unit, adds
stability, and prevents marring and scratching of the desktop surface.
Choose an Appropriate Location
The “twister” 2111 media converter is intended for use in an office or
industrial environment. The unit must be located within six (6) feet of the
AC power source being used and placed as far away as possible from
electrical noise generating equipment such as copiers, electrostatic printers,
and other motorized equipment. If exposed twisted-pair wiring is used
nearby, the wiring should be routed as far away as possible from power
cords and data cables to minimize interference.
The units may be oriented in any manner that permits you to make physical
connection to the power supply and leaves a minimum of six (6) inches of
space for proper ventilation.
TUV Compliance Note: For pluggable equipment, the socket outlet must be installed
near the equipment and be easily accessible.
Bei Geräten mit Steckanschluß muß die Steckdose nahe dem Gerät angebracht und
leicht zugänglich sein.
1
3
6 Installation Guide
COL
LINK
PWR
10BASE-2 10BASE-T
™
“twister”
2111
ACT
OFF
TERM
Termination Switch
(default is OFF)
ON
Set the Switches
Termination Switch
(2111-12-01 only)
The “twister” 2111-12-01 has a termination switch located on the front panel.
This switch, labeled TERM, is used to set either internal or external
termination on the BNC port.
External termination is enabled when the switch is in the OFF position
(default). Use this setting if the “twister” will be used in a daisy-chain
configuration, or if you must use a BNC T-connector and terminator for
proper external termination.
Internal 50Ω termination is enabled when the switch is in the ON position.
To change the setting, use a pointed object to slide the switch. When
internal termination is enabled, the unit’s BNC port can be connected
directly to another device, without the use of an external BNC terminator.
4
“twister” 2111 Media Converter 7
Transparency Switch
(2111-13-B and 2111-15-B only)
The “twister” 2111-13-B and 2111-15-B have a set of DIP switches located on
the back panel. Only the transparency switch, labeled TSP, is configurable. All
other DIP switches are nonfunctional.
When TSP is ON (default), the “twister” becomes completely transparent to
the end devices connected to its two ports. This allows the devices to
perform auto-negotiation directly with each other. For most applications,
we recommend this mode of operation.
When TSP is disabled (OFF), you must manually configure the speed and
duplex on both end devices to the same setting.
Refer to Transparency Mode for more information about this feature.
PWR
DC INPUT/5VDC
OFF
ON
DIP
switches
default
settings
ON
OFF
TSP
TSP
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